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(No Model.) 2 sne6s-sheen 1". T. L. WALLACE. 1 METAL POLISHINGrAMACHINE.

No. 564,666. Patented July 26, 1896.

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T. L. WALLACE. METAL POLISHING MACHINE.

No. 664,666.- Patented July 26, 1696.

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/NVENTOH UNITED STATES PATENT OFFICE.

Y THOMAS L. XVALLAOE, OF INDIANAPOLIS, INDIANA, ASSIGNOR-TO THE E. C.ATKINS da COMPANY, OF SAME PLACE.

METAL-POLISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 564,668, dated July 28,1896.

Application led February 24, 1896. Serial No. 580,379. (No model.)

To all whom it nay concern.-

Be it known that I, THOMAS L. WALLACE, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in MetaLPolishingMachines, of which the following is a specification.

The object of this invention is to produce a machine by which a wavyornamental finish may be given to saws or similar metal plates in theprocess of polishing them.

A machine embodying said invention will be first fully described, andthe novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters and figures of reference indicate similarparts, Figure 1 is a side elevation of a lmachine embodying saidinvention, a portion of the framework being broken out; and Fig. 2, anend elevation thereof.

In said drawings, the portions marked A represent the rigid orstationary framework; B, a pivoted and vibrating framework; C, a leverfor operating it; D, a reciprocally-movingtable; E, the polishingwheel;and F, the main driving-shaft.

The frame A is of any suitable construction and carries the bearings forthe other parts.

The frame B is composed, essentially, of two long timbers, with suitablecross-bars, and is pivoted at the rear end by means of the pivot a onthe standard A of the frame A. At the other end it has a leg B', whichis rigidly secured and braced thereto, asbest shown in Fig. 2, andextends downwardly and is connected by means of a pivot b to a shortlink B2, which in turn is connected to the lever B3 by means of l apivot b2. Said lever is mounted on a pivot b3, and at its rear endcarries a weight or weight-box B4, and has also, preferably, a treadleB5 attached thereto, by means of which the operator may apply additionalweight or pressure. The pivot b', as will be readily understood, permitsthe frame as a whole at this end to have a practically free sidewisemovement, while the pivots b2 and a permit a vertical movement, all'without straining the joints of any part of the framework, and thework'is thus held yieldingly to y i the polishing-wheel.

The lever C is mounted on a pivot c carried by a bracket A2 on the frameA, and its upper end extends through a bearing in an arm B6 on the frameB, while its lower end extends down alongside a grooved camwheel C2 onthe shaft l, which is mounted in bearings A3 on the frame A. Said leveris provided with a suitable point which extends into the groove of thecam-wheel, as shown, and is guided and held to place by a bracket A4through which 'it passes. The shaft l is driven from a shaft 2 by a belt3 running over suitable pulleys on said shafts, as shown, an d saidshaft 2 is driven from the main shaft F by means of a belt 4 runningover suitable pulleys, as also showin. When the machine is in motion theoperation is that the lever C is given a vibrating movement by thecamwheel C2, and imparts a corresponding vibrating movement to the frameB.

The reciprocally-moving table D has bearings d which rest on ways b onthe frame B. It is provided with a rack d', which engages with a pinion5 on the shaft 2, and is thus driven back and forth reciprocally overthe frame B. The reverse movement is secured by ordinary shifting beltsand loose and tight pulleys on the primary driving shaft. (Not shown.)This reciprocally-moving table preferably has a raised bed D, on whichthe saw S (or other plate) to be treated is mounted.

Clamps 6 and 7 are provided at the two endsof this saw-bed by which thesaw may be held in place thereon. The clamp 6 thus holds the saw whileit is being started in below the polishing-wheel, but obviously must bethrown out of engagement before the saw passes en- Y tirely throughunder said p olishing-wheel, and the clamp 7 is moved into engagementwith the saw-plate after it has passed below said polishing-wheel andhold it during the action of said wheel upon the end of the saw adjacentto the clamp 6 while said clamp 6 is out of engagement. The clamp 6during the period of its engagement is moved and held into operativeposition by the handle-arm w on its shaft S. arm is secured on the otherend of said shaft and projects upwardly, as shown. A bracket ICO d6 onthe frame A projects out into the path of this arm and when said armreaches said bracket in the course of its movement is forced backthereby, and the clamp 6 thus thrown back off the saw and out of theway, so that the table andsaw are free to continue their travel throughunder the polishing-wheel. The clamp 7 is normally held out ofengagement by the weight w carried by an arm on the clamp-shaft S2. Atthe other end of its said'shaft it has an arm which comes in contactwith a flange or plate A7 o'n the frame A, by which, as soon as thecarrying-table reaches the proper point, the clamp is thrown intoengagement with the saw and there held during the remainder of themovement of the table, the plate A7 being of sufficient length to securethis. On its return movement, when it reaches the end of the plate, theweight w operates immediately to disengage the clamp and throw it backinto the position shown in the drawings. By these means the clamps 6 and7 are automatically thrown into and out of operation at the properpoints as the table travels back and forth, securing the saw firmly ontothe table at all times, but each being thrown out of the way of thepolishingwheel when the proper point is reached. As will be observed,one clamp is thrown into operative position just before the other isthrown out, so that the saw, while being operated upon, is always heldby a clamp.

The wheel E is a polishing-wheel of any desired form or construction,and is mounted on a shaft 8 carried by bearings 9 and 10 secured ontheupper portion of the frame A. It is driven by a belt 1l ruiming fromsome suitable driving-shaft. (Not shown.)

The operation of my machine is as follows: The saw S is placed on thebed D', and secured there by the clamp 6. It is then started under thepolishing-wheel E, and is held in close contact therewith by the actionof the weight B4 operating through the lever B3 anddownwardly-projecting leg B', aided, if necessary, bythe weight of theoperator applied to the treadle B5. The whole structure which carriesthe saw is given a slight sidewise vibrating movement by means of thecam-wheel C2, lever C, and arm B6, as has already been explained. Theresult is that the surface of the saw is given a wavy polish, which ishighly ornamental, and this is done automatically without any additionallabor more than is required in ordinary plain polishing.

This machine may be duplicated by placing another polishing-wheel on theother end of the shaft 8 and a corresponding frame B and other mechanismon theother side of the frame A, and when this is done two operativesstanding at the opposite ends of the machine can operate both parts ofit. Obviously, however, this is a mere duplication of what is shown, andis entirely within the scope of my invention.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

l. In a polishing-machine, the combination, of the polishing-wheel, thereciprocating carrying-table, driving mechanism, a vibrating table orframe on which said carrying-table is mounted, said frame beingsupported and carried on pivots, one of its ends being pivoted to aweighted lever by which it may be moved up and down, substantially asset forth.

2. In a polishing-machine, the combination, of the polishing-wheel, thecarrying-table mounted to reciprocate on its supportingframe, said framesupported on pivots at both ends, one end being connected to anoperating-lever by both a longitudinal and a transverse pivot, wherebysaid end is adapted to be vibrated sidewise and moved up and down,substantially as set forth.

3. The combination, in a polishing-machine, of a frame B, a pivot awhereby said frame is carried at one end, a weighted lever B3, and aninterposed link having the two pivots b and b2, substantialiy as shownand described.

4. The combination, in a metal-polishing machine,.of thereciprocally-moving carrying-table, a clamp 7 pivoted on one end of saidtable, an arm as extending out from the clamp-shaft, and a contact-plateA7 on the framework, whereby the clamp is thrown into engagement withthe plate on the table, and a weight w carried by another arm on theclamp-shaft, whereby said clamp is thrown out of engagement as itescapes from said flange or plate, substantially as set forth.

5. The combination, in a metal-polishing machine, of thereciprocally-moving carrying-table, the clamp 6 mounted on one end ofsaid table, a handle-arm zu on the clampshaft whereby said clamp ismoved into engagement, a second arm on said clamp-shaft, and a bracket aon the frame A whereby said clamp is thrown out of engagement as thetable approaches the polishing-wheel, substantially as set forth. f

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 18th day of February, A. D. 1896.

THOS. L. `WALLACE- [L. s]

Vitnesses: f

CHESTER BRADFORD, JAMES A. WALsH.

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